<!DOCTYPE html>
<html>
<head>
    <title>test</title>
    <script src=" http://tjs.sjs.sinajs.cn/open/api/js/wb.js?appkey=3007283299" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<script>
    WB2.login(function(){
//callback function
    });

</script>
</body>
</html>